Tandem draft connection for harvesters.



C. PEARSON.

TANDEM DRAFT CONNECTION FOR HARVESTERS. APPLIcATloN FILED MAY l, 1913.

1,159,988. Patented Nov. 9, .1915.'

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C.PEARSON TANDEIVI DRAFT CONNECTION FOR HARVESTERS.

APPLICATION FILED MAYI. |913.

' v Patented; Nov. 9, 1915.

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'UNITED STr/XTES PATENT OFFICE.'v

CHARLESPEARSON, OF CHICAGO, ILLINOIS, ASSIGNOR/TO INTERNATIONAL HARVESTERy COMPANY OF NEW JERSEY,' A CORPORATION OF NEW JERSEY.

TANDEM DRAFT CONNECTION FORVHARVESTERS.

Specification of Letters Patent.

Patented N ov.` 9, 1915.

appncation inea May 1. 1913. serial No. refines.

Be it known that I, CHARLES Pearson, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain' new and useful lImprovements in Tandem Draft Connections for Harvesters, of which the following is a full, clear, and exact' specification.. l

My invention relates to an improved draft mechanism whereby a series of grain harvesters or other implements may be connected together in tandem relation and drawn forward by a single source of power, as a traction engine, to which the forward machine of the series is connected, and consistsin providing draft connections between the different units and between the series and the source of power that may. be manipulated by the operator upon the machine in a manner to control the-line of advance of one machine independent of the others, whereby a greater or less width of swath may becutby either unitof the series, or the machines maybe controlled ina manner to vtrail one directly behind the other, or at any desired degreeof offset relation.

The object of my invention is to provide a draft mechanismvof the character indicatedr that may be cont-rolled in a simple and positive mannerA for the purpose described, strong' 1n construction and efficient in operation. I attain these objects by means of mechanism, one embodiment of whichis illustrated in the accompanying drawings, in which- Figure 1 represents a top plan view of my invention as applied to the frame of a harvester;I Fig. 2 is a side elevation of Fig. 1;`Fig. 3`is a top plan view .on a reduced scale of the mechanism and 'designed to illustrate the manner of connecting a plurality of harvesters in tandem relation; and 1 an enlarged frontvelevation of part ef tht-,controlling mechanism along line .f1-B of Fig. 1.

The' same reference numerals designate like parts throughoutthe several views. 1

1 represents thev grain platform of a har-r vester, including a front frame member'Q and arear member 3. f- Y 4 represents-the: front memberof Vthe wheeled 'frame having the grainward end thereof secured tothel member 2 5 the rear member of the wheeled frame having the plate 191. i

2O represents a worm'engaging Witlethe) vber 91,1,andithe opposite end with a bracket member 10 secured to the front member 2 of the grain platform by means of a bracket member 101, and arranged substantially parallel with theft-ont of the machine in a manner permitting a tiltingmovement of the harvester relative to the bar.

11 represents a draft tongue hav-ing the rear end thereof pivotally connected with the bracket 91 inv a manner permitting the tongue to swing laterally relative to the line of d aft of the machine.

12 represents a bar having one end con-. nected with the tongue, preferably coaxially with the pivotal connection thereof, and arranged at right angles therewith and having the opposite end thereof secured to the rear end of a brace member 13, the brace member extending forwardly and. laterally and having the front end thereof secured to the draft tongue; the bar 12 and brace member 123 being, in effect, an integral part of the draft tongue, the function thereof being to increase the width of the rear end of the draft tongue grainward from the pivotal connection thereof with the bracket member 91.-

14 represents a bracket member securedf to the wheeled frame member 7 intermediate the ends thereof by means of the .bolts 15,

and in substantially the samevertical plane as the axis of; the 1 tract-ion wheel 8,l and provided with avertically arranged journal bearing 16 in which is journaled a stem 17, having secured. tothe upper end thereofv a. segmental worm wheel 18 that is operatively. connected with the;` rear endof the brace mechanism being shielded by' meansiiofta wheel.18 vand secured ito the', shaft `2-1-:ar:

'member 13 by. means of a link19; the gear `anged in the direction of the line of draft of the machine, and journaled in laterally extending bearing members integral with the bracket member 1l, the rear end of the shaft 21 being operatively connected with the front end of a shaft'23 by means of a universal coupling mechanism 2l; the rear end of shaft 23 being journaled in a bracket member 25 secured to the frame of the liaivester and having secured thereto a bevel gear wheel 26. f

27 represents ayoke member mounted upon the rear end of shaft '.23 and in which is journaled the lower end of a vertically arranged shaft 28, having secured thereto a bevel pinion 29 engaging with the gear wheel 26,'the upper end of said shaft being journaled in a bracket member 30 secured xto the harvester frame and having integral therewith a crank member 31 within convenient reach of the operator, whereby the angula r relation of the draft tongue and liarvester may be readily controlled by a manipulation of the shafts ,'28 and 23, the worm 20, the segmental wheel 1S and the connecting link 19. y

32 represents a `supplemental wheeled frame member having the forward end thereof secured to the frame member 7 and extending rearward and grainward has the rear end thereofI secured to the rear members 3 and 5 of the grain platform andI wheeled frame, respectively, and 33 represents a similar member having the rear end thereof secured to the wheeled frame member 7 and extending forward and grainward has the forward end secured to the front members 2 andl l of the grain platform and wheeled frame, respectively, the function of the members 32 and 33 being to resist a4 tendency of the draft force to distort the wheeled frame and the grain platform.

For the purpose of giving additional support to the bracket member 14C a bar 34 is provided havingthe front end thereof secured to bracket 1l and its rear end to the rear member 5 of the-wheeled frame and disposed parallel with the wheeled frame member 7 35 represents a draft link having its front end pivotally connected with the bracket 14 in the same vert-ical plane as the axis of the traction wheel for the purpose of preventing a distortion of the wheeled frame and giain platform by the draft foice when several machines are drawn in tandem relation; the rear end of the link 35 being adapted to have a vertical pivotal connection with the front end of a second draft tongue and permitted to have a free lateral swinging movement to accommodate itself to the line of draft of the machine.

l/Vhile I have in this application described vone embodiment which my invention ma;r

assume in practice, it is to be understood that the form shown is used for purposes vof illustration and may be modified without departing from the spirit of the invention.

What I claiin as my invention, and desire to secure by Letters Patent, is:

1. ln a tandem draft connection, a niachine fraine, a ti'action wheel mounted in said frame, a draft tongue pivotally counected with said frame, and a draft link having the front end thereof pivotally connected with said frame substantially in line with the axis of said wheel in a manner permitting the rear end thereof to swing freely laterally relative to the line of draft.

2. In a tandem draft connection, a machine fraine, a traction wheel mountedv in said frame, a draft tongue pivotally connected with said frame, a draft link having its front end pivotally connected with said frame substantially in line with the axis of said wheel in a manner permitting the rear end thereof to swing freely laterally relative to the line of draft, and a second draft tongue having its front end pivotallv connected with the rear end of said draft link.

3. In a tandem draft connection, a machine frame, a traction wheel mounted in said frame, ay draft tongue having one en'l pivotally connected with said frame, means for varying the angular relation of said tongue and frame relative to the liiic of draft,.a draft link having the front end thereof pivotally connected with said frame substantially in linewitli the axis of said wheel in amanner permitting the rear end thereof to swing freely laterally relative to the line of draft, and a second draft tongue having its front end pivotally connected with the rear end of said-draft link.

Y .4. In a tandem draft connection. a machine frame, a draft tongue provided with a relatively wide rear end having one side thereof pivotally connected with said frame. means mounted upon-said frame in rear of the axis of said tongue and operatively connected with the opposite side of the rear end of said tongue, said means being operative in a manner to control the angular relation between said tongue and frame relative to the line of draft, and andraft link having the front end thereof pivotally connected with said f 'ame in rear of the axis ofsaid tongue and adapted to swing freely laterally relative to the line of draft.

5. In a tandem draft connectioina niachine franie. a draft tongue having a pivotal connection with said frame. ,a hai' having one end thereof secured to the,l rear end of said tongue and extending laterally therefrom, a second bar having its rear end seiin cured to the opposite end of said laterally A operatively connected with one of said bars, said means being operative in a manner to control the angular relation between said tongue and frame relative to the line of draft, and a draft link lia-ving the front end thereof pivotally connected-with said frame in rear of the axis of said tongue and adapted to swing laterally relative to the line of draft.

` 6. In a tandem-draft connection; a machine frame, a traction wheel mounted in said frame, a draft tongue pivotally connected with said frame and adapted to swing laterally relative thereto, means for controlling a swinging movement of said tongue, said means being mounted upon said frame near the axis of said Wheel, and a draft link having the front end thereof pivotally connected with' said frame in line with the axis of said wheel and adapted to swing freely laterally relative to the line of draft.

In testimony whereof I affix my signature, in the presence of two witnesses. CHARLES PEARSON. Vitnesses:

RAY PATTIsON, R. W. MARTIN, 

